Kamen Rider: I'm Nexus, the Nightmare of Oma Zi-O!

Li Mu, the fourth host of Nexus, once evolved into Wingless Noah, only to be brought down by overwhelming numbers. After falling into darkness and becoming Dark Zagi, he was defeated by a new generation of hosts. To escape being devoured by Dark Lucifer, he burns through his life force to blast open the barriers of space and plunges into the world of Kamen Rider Geats. His cells are on the verge of total collapse, and he's one step from death. During a riot in the streets, he sets his sights on Ukiyo Ace's Boost Mk-IX. Using Sakurai Sara as cover, he snatches it away, and his dark power immediately corrupts the Driver. He transforms into Dark Nine-Tailed Geats and uses the power of creation to temporarily stabilize his crumbling body.

Beroba comes to see him and reveals that this world is an entertainment show made by people from the future, who have recreated history. The Goddess has the power to create worlds and can help him achieve his final evolution. Li Mu goes straight to the castle where the Goddess is imprisoned. Beroba keeps Jitt and Gya-go outside, while Sakurai Keiwa searches everywhere for his sister. Li Mu has already come face-to-face with the Goddess. Ohma Zi-O still belongs to the future, but the Dark Nine-Tails that belongs to him has arrived early.

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.